Electric-arc lamp.



S. 'SZUBERT.

ELECTRIC ARC LAMP.

APPLICATION FILED 0011;, 1909.

Patented July 18, 1911.

ELECTRIC-ARC LAMP.

v To all whom it may concern:

Be 'it known that I, srANrsnAw SZUBERT,

asubject of the Czar of Russia, and residing My invention relates to arc-l ampsand a primaryiobject is to provide an improved electric arc-lamp in which lazy-tongs or a scissor like system of levers is employed carrying at one end the electrode -holders and at, the other'end 'memb'erssliding in guides,

whereas the member regulating the feed,

' intersection of the levers.

- on the top ends of the levers are either guided e. g. a nut on a screw, engages at the point of Said 'Inembers rectilinearly or in such curves'that the electrode-holders move exactly int-he longitudinal direction of the electrodes. The guides are inwardly curved .at their lower ends, and consequently when the guided ends of the levers are guided by these parts the lower ends-of. the electrodes are drawn apart and and turn inward'at their lower ends 10, and

the are ruptured. v

One constructional form of my improved arc-lamp is represented diagrammatically by way' of examplein the accompanying drawing, wherein I-f-Fignre l -is a diagrammatic front elevation, F ig.u 2 a side elevation, partly in section, and Fig. '3 shows-a modified det-ail. I .Referring tozthe drawing, a spindle 1 havinga-helical-groove or screw is journaled revolubly inlb'earin'gs 2r ",On'said spindle l'd by the: screwijandf forming the fulcrum of levers 4'.- c The uppe r pair of ends of levers has pins ,5 sliding inthe curved ides 6,:whereas the lower pair; of ends carri'es the holders-Tcarrying the electrodes 9 guided-Lin holes in-ythe: plate 8 above the arc. The guides ,6 are provided in the plate 19 attached to the base-plate QQ-of the lamp.

'When the screw is rotated in-the one sense,

its sleeve and the levers 4 connected with it descend, and the electrode-holders move err-- actly inthe longitudinal direction of the electrodes .9 in consequence 1 of the curved guides 16. These guides,'for theupper ends of the lever-s4 suddenly change in, direction the corresponding. end 11 of thespindleis without. thread; or-the thread runs parallel tothe longitudinal axis of the} "Now as soon as the pins 5 arriveit, the j wardl UNITED STATES PATENT. OFFICE.

' s'rANIs Aw S ZUBERT, or PANKOW, NEAR 'BERmm'eEniw Specification of LettersPatent, v Patent' (l 11 Application filed October 1a, 1909.- Serial in. 523,227.

'es the Sleeve 3 carryinga pin .3 driven directed portion of thea-gtuides,

will fall down the portiohyof th spindie without thread, whil'e thei-two-epairs fiiends of levers 4; come tOgQtllGlfifiOlfllflbxi of the electrodes guided in thezlioles ofiplote 8 suddenly move apart and-srupture'tliejrc.

' Current may be supplied? by conductor-L 15 to the series electromagnet-z13iand Kth'encn through contact '1 6 to the: one carbon wand fromthe other carbon through-contact 1-'I1,=to the source of current. Electromagnetrlijig connected in shunt. across the arczbyxconduci501 16; 1 :3 In-an alternating current -la1hp', a rshown 1n the drawing, spindle! is rotated.-by.ithe disk 12 fixed on it and composedofiaasuitable metal, as fro between the poles of a serieselectromagnet 13 and a shunt electromagnet 14 When the lamp is started the disk rotatesunder' the influence of the shunt electromagnet until the carbon tips contact one another. Then the series electromagnet'rotates the disk so that the carbon tipsgo apart until the.normal strength of current is obtained, whereas the shunt electromagnet moves the carbon tips together, in the case of too great tension, until the normal tension is brought about.

1. In an electric arc-lamp, the combination, with a system of levers pivotally connected together, holders attached to one end of the same, and electrodes sloping toward one another in said holders, ot-a fined memher having two guides, electromagnetically- "operated means for moving thepivotof said system of levers rectilinearly, the other end of the system of levers being guidedin said guides and causing said electrode-holders to move in the longitudinal direction of said electrodes.

2. In an electric arc-lamp, the combination, witha system of levers pivotally connected together, holders attached to one end of the same and electrodes sloping toward one another in said holders-,of electromag; netica'lly -operated means for moving the pivot of said system of levers-rectilinearly. and curved guides guiding the other end of the system of levers and causing said electrode-holders to move in the-longitudinal directionof said electrodes, the curves of said guides running in a direction opposite to the curves described by the ends of said system of levers' carrying said holders.

e rpaluminum,.moving gt d 3. In an electric arc-lamp, the combination, with a system of levers pivotally connected together, holders pivotally attached to one end of the same, a plate having holes, and electrodes sloping toward one another, guided in said holes and held in said holders, of a, spindle provided with a helical oove, a sleeve slidable on said spindle,'a pivot of said system of'levers passing through said sleeve into said groove, and outwardlycurved guides bent suddenly inward at their lower ends guiding the otherv end of the system of levers.

4.-In an electric arc-lamp, the combinae tion, with a system of levers pivotally con- 7 nected together, holders pivotally attached to one end of the same, a plate having holes,

and electrodes sloping toward one another, guided in said holes and held in said holders, of an electromagnetically-operated spindle provided with an endless screw thread, a sleeve slidable on said spindle,- a pivot of said system of levers passing through said sleeve into said screw thread, and outwardly-curved guides guiding'the other end of the system of levers, said screw thread running parallel with'the axis of the spindle another, guided in said he es and held in said "holders," of a spindle provided with a helical groove, electromagnetic means comprising a series electromagn'et and a shunt electromagnet, a metal disk fixed on said spindle and revoluble between the poles of said electromagnets, a sleeve slidableon said spindle, a pivot of said system of levers passing through said sleeve into said move; and outwardly-curved guides-bent su ldenly inwardat their lower ends guiding the other end of the system of levers.

In testimony whereof, I afiix my signature in the presence of two witnesses.

. STANISLAVV SZU BERT.

Witnesses:

Wotnmmn HAUr'r, HENRY HAsPER. 

